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All Journal ELKHA : Jurnal Teknik Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Sinergi ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING InComTech: Jurnal Telekomunikasi dan Komputer Matrix : Jurnal Manajemen Teknologi dan Informatika Techne : Jurnal Ilmiah Elektroteknika Green Intelligent Systems and Applications Jurnal Nasional Teknik Elektro dan Teknologi Informasi MATRIX : JURNAL MANAJEMEN TEKNOLOGI DAN INFORMATIKA Makara Journal of Technology Jurnal Rekayasa elektrika International Journal of Electrical, Computer, and Biomedical Engineering (IJECBE) Buletin Pos dan Telekomunikasi
Catur Apriono
Department Of Electrical Engineering, Faculty Of Engineering, Universitas Indonesia
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences

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Business transformation from connectivity to digital: case study “PT. MNO Indonesia” Fauzan, Itsnanta Muhammad; Ihsan, Amirul; Mahmudi, Farhan Annur; Mubarak, Amirsyah Rayhan; Apriono, Catur
Matrix : Jurnal Manajemen Teknologi dan Informatika Vol. 12 No. 2 (2022): Matrix: Jurnal Manajemen Teknologi dan Informatika
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/matrix.v12i2.79-90

Abstract

The telecommunications industry plays a role in meeting the needs of digital connectivity services to the community, especially in line with the community's need for internet connections which is increasing rapidly. As one of the telecommunications service operators in Indonesia, "PT. MNO Indonesia" must meet this need to get maximum profit and the best service to the customers with the right business strategy. However, the current connectivity business model is still the mainstay, with revenue levels that tend to stagnate and even experience a decline. The provision of network services and investment in infrastructure development are still the main concerns, so a change in business strategy is needed. This study proposes several recommendations for business strategies to increase revenue based on reviewing and analyzing financial data and statistics for Indonesian and international telecommunications businesses. In this study, financial report data and digital sector statistical data were analyzed and divided into four aspects: traffic, finance, network development, and digital service with the min-max method, standard deviation, and average. From the analysis conducted in this research, "PT. MNO Indonesia" needs to transform its business into digital business model.
Asah skill: An approach skill-based learning platform with management and strategic planning process Ellin Devihana Pratiwi; Hendrik Amrico; Muhammad Afiff Rizki; Resti Savira; Catur Apriono
Matrix : Jurnal Manajemen Teknologi dan Informatika Vol. 12 No. 2 (2022): Matrix: Jurnal Manajemen Teknologi dan Informatika
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/matrix.v12i2.91-101

Abstract

Digital transformation in education improves entities by implementing significant changes in education by combining information technology, computing, communication, and coordination. This paper proposes improving education through a digital transformation through platforms, specifically online skills-based learning called ASAH Skill. The survey was conducted by collecting question data from Google Forms. By using the Problem Validation method and Primary Data, obtained Product Validation on Customer Needs (Survey) and Product Strategy (Affinity Diagram). It is a market-based validation as a guide for designing ASAH Skill products that meet the criteria and needs of Skill Providers and Seekers. The method considered consists of three steps, namely strategic situation analysis (SSA), strategy formulation (SF), and strategy implementation (SI). We have finally found what customers need to develop their skills during the isolation period of the covid-19 pandemic. The survey was conducted on 51 respondents. Strategic Implementation consists of Mockup, Business Model Canvas (BMC), and Problem Solution Fit Canvas. The biggest detention experienced by respondents was very limited mobility (82.4%). The survey also showed that most of the activities respondents did during the pandemic were exploring new things (37.3%). Video editing is the most learned skill during the pandemic (25.9%), and YouTube is the respondents' main choice as a medium for learning skills (43.1%). Overall, the results of the study show that dispensing and learning skills are a new need for society during a pandemic. The provision of a platform is a development opportunity as a forum for the dissemination and learning of skills. The highest priority is on the 'easy to use' attribute where all respondents give an importance rating of 5.
Literature review: visible light communication system business model scheme for telecommunication business in Indonesia Wicaksono, Khalfan Nadhief Prayoga; Apriono, Catur
Matrix : Jurnal Manajemen Teknologi dan Informatika Vol. 13 No. 2 (2023): Matrix: Jurnal Manajemen Teknologi dan Informatika
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/matrix.v13i2.80-93

Abstract

The telecommunication sector mainly comprises operators, vendors, and regulators. In Indonesia, tele- communications operator companies tend to decrease profits from the first quarter of 2017 to the third quarter of 2018. This condition is due to the tight competition of telecommunication service providers, high operational costs, and digital transformation that does not provide substantial revenue for the company. Telecommunica- tions operators need other service options that can expand target market segmentation. It aims to open up a new blue ocean as a new source of income. The world is getting closer to massive communication technology, so high-speed communication is needed. Therefore, telecommunications operators can open new service options based on the visible light spectrum as their communication resources. This option can be integrated with ambient lighting, a wide spectrum ranging from radio waves, and greater bandwidth, making visible light suitable for IoT- 5G services. This research aims to design a wireless visible light communication business model. Several frame- works are used, such as the magic triangle of St. Gallen, Osterwalder Business Model Canvas, and PESTLE analysis. The business model design results in a business model with B2B market segmentation being the main focus and B2C market segmentation to acquire retail customers.
Machine Learning Predictive Models Analysis on Telecommunications Service Churn Rate Akbar, Teuku Alif Rafi; Apriono , Catur
Green Intelligent Systems and Applications Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/gisa.v3i1.249

Abstract

Customer churn frequently occurs in the telecommunications industry, which provides services and can be detrimental to companies. A predictive model can be useful in determining and analyzing the causes of churn actions taken by customers. This paper aims to analyze and implement machine learning models to predict churn actions using Kaggle data on customer churn. The models considered for this research include the XG Boost Classifier algorithm, Bernoulli Naïve Bayes, and Decision Tree algorithms. The research covers the steps of data preparation, cleaning, and transformation, exploratory data analysis (EDA), prediction model design, and analysis of accuracy, F1 Score, receiver operating characteristic (ROC) curve, and area under the ROC curve (AUC) score. The EDA results indicate that the contract type, length of tenure, monthly invoice, and total bill are the most influential features affecting churn actions. Among the models considered, the XG Boost Classifier algorithm achieved the highest accuracy and F1 score of 81.59% and 74.76%, respectively. However, in terms of efficiency, the Bernoulli Naïve Bayes and Decision Tree algorithms outperformed XG Boost, with AUC scores of 0.7469 and 0.7468, respectively.
Perancangan Antena Ultra Wideband Dengan Metode Coplanar Waveguide dan Matching Stub Untuk Aplikasi Wireless Body Area Network Rusdiyanto, Dian; Astuti, Dian Widi; Apriono, Catur
InComTech : Jurnal Telekomunikasi dan Komputer Vol 14, No 2 (2024)
Publisher : Department of Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/incomtech.v14i2.21965

Abstract

Penggunaan teknologi pada ranah kesehatan berkembang pesat, salah satunya yang cukup popular adalah Wireless Body Area Network (WBAN). WBAN merupakan teknologi yang menawarkan akses informasi pada tubuh dan perangkat kesehatan secara nirkabel. Sakah satu perangkat untuk mendukung teknologi nirkabel adalah antena. Penelitian ini fokus pada perancangan antena yang digunakan pada aplikasi WBAN. Antena dirancang menggunakan metode coplanar waveguide (CPW) dan matching stub. Metode ini berguna untuk mencapai bandwidth yang sangat lebar (ultra wideband) dan dapat melakukan tuning pada frekuensi kerja yang akan dicapai. Hasil simulasi menunjukan antena mempunyai bandwidth  sebesar 17,8 GHz pada rentang frekuensi 2, 953 GHz – 20,761 GHz dan gain maksimal 6,09 dBi. Simulasi antena juga dilakukan dengan menempatkan antena di atas material tekstil seperti jeans dan katun. Posisi antena di atas jeans mempunyai peningkatan gain simulasi sebesar 9,85% dan lebar bandwidth bertambah 1 GHZ dibanding hasil tanpa material. Sedangkan dengan material katun, nilai bandwidth juga bertambah namun gain simulasi mengalami seidkit penurunan. Walaupun demikian, dengan adanya kedua material tekstil tersebut tidak mempengaruhi performa antena karena masih berada pada frekuensi resonan WBAN yaitu 3,1 GHz – 10.6 GHz. Dengan demikian perancangan antena ini telah sesuai dengan spesifikasi WBAN pada frekuensi ultra wideband dan metode CPW dan stub telah mencapai hasil sesuai dengan tujuan.
Valuation of 5G mmWave Fixed Wireless Access in Residence Area: Analysis of Real Option for Wireless Broadband Service in Kota Wisata Cibubur Using Decision Tree and Black Scholes Model May Hendra Panjaitan; Catur Apriono
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 8 No. 2 (2022): June
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v8i2.23626

Abstract

Fixed Wireless Access (FWA) is one of the popular use cases in 5G, expected to replace conventional internet service. However, investing in a telecommunications project requires massive capital, so careful planning is usually required. In general, investments are valued by the standard Net Present Value (NPV) method. When the NPV is positive, the project is profitable. However, the NPV possibly will not be as expected due to uncertainty in the future. One of these is the number of subscribers. This research proposes using Real Option (RO) to analyze the FWA project with an uncertainty of the number of subscribers and compare it to the standard NPV method. From the result of the research, the standard NPV method produces a positive Expected NPV of $153,176. However, there is a 33% possibility that the NPV will be -$406,246. By using the decision tree in RO to evaluate the project, the managers have an option to delay the project from one to three years and eliminate negative NPV resulting in the Expected NPV of $250,038, $216,842, and $188,371. Using Black Scholes Model to delay the project from one to three years also results in a higher Expected NPV of $220,668, $209,593, and $219,428.
Terahertz Imaging Simulation Using Silicon-based Microstrip Antenna and Horn Antenna for Breast Cancer Detection Herry Tony Andhyka; Catur Apriono; Fitri Yuli Zulkifli
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 8 No. 4 (2022): Desember
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v8i4.24809

Abstract

Breast cancer is one of the most common cancers in the world that cause a lot of mortality. Early cancer detection is crucial to decrease morbidity and mortality rates worldwide. Effective treatment or early intervention is crucial before the disease becomes more incurable. This research contributes to proposing a THz imaging system for early cancer detection, especially breast cancer, by using the benefit of THz radiation. Some approaches are made differently from the previous research, such as the imaging method, the antenna type, and the material for the antenna with the expectation of producing an efficient system and better imaging results. The system consists of one microstrip antenna as a transmitter, 25 horn antenna as a receiver and a breast tissue model. All antenna is designed to meet the requirement specification. The receiver antenna will receive power from the transmitter which will vary due to the absorption of the breast model. The received power will be visualized into a 2D color image. The simulation was able to visualize an image of the breast tissue model. Received power varies from -16.280 dB to -55.241 dB which leads to different color levels to represent the model. Antenna radiation patterns also take a role to cause the phenomenon occurred that leads to differentiation of the breast tissue type. Based on the results, this research has able to simulate a THz imaging system for breast cancer. Further modification to the system can be done to improve the imaging results.
Visible Light Communication System Design Using Raspberry Pi4B, LED Array, and MQTT Synchronization Protocol Teuku Alif Rafi Akbar; Apriono Catur
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 9 No. 1 (2023): March
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v9i1.25431

Abstract

Visible light communication emerged as the solution to overcome limitations exist in RF-based communication system. Although many research has been done on VLC, there are still a lot room for improvements, especially in the design of the VLC itself. This study discusses a simple visible light communication system design that transmits temperature and humidity information. The system uses Array 2×2 LED configuration to transmit data and photodiode to receive the optical signal. Raspberry Pi is used as the signal processor. The research carried out variations in the color of LED used, variations in the method of synchronization, and variations in the data rate transmission with BER value as the main parameter to be analyzed. The research contribution is to propose a simple visible light communication design that transmit and receive information in reference to room temperature and humidity using Raspberry Pi and DHT-11 sensor, while also implementing two synchronization methods to maximize synchronization in transmission thus minimizing the BER value in higher bit rate. The LED used is blue with an average voltage of 0.0423 V for bit ‘1’ and 0.00448 V for bit ‘0’. The throughput can be achieved are within range 1bps to 10 kbps with BER 0.5 as a threshold. The implementation of the synchronization method decreases the average BER value by 0.0945 with the implementation of transmission calibration synchronization and decreases the average BER value by 0.1221 using the MQTT communication protocol. In conclusion, the design has limitations through the component used in the transmitting and receiving end with BER values relatively high. Further research for system development can be done by implementing Forward Error Correction to minimize errors that occur in the transmission and collaborating with vendors with same research field for the latest components for VLC system design.
Performance analysis of circular polarization X-band microstrip patch antenna combined with conical horn B. Pratiknyo Adi Mahatmanto; Dedi Irawadi; Hidayat Gunawan; Nugroho Widi Jatmiko; Dinari Nikken Sulastrie Sirin; Supriyono Supriyono; Suhermanto Suhermanto; Bambang Dewandaru; Catur Apriono
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 22, No 5: October 2024
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v22i5.25748

Abstract

A ground station antenna system features a conical horn attached to a microstrip antenna as an alternate receiving feed antenna. The proposed microstrip antenna has circular polarization and operates in the X-band. The far-field parameters of the antenna are measured after developing and simulating the combination of a conical horn and a microstrip antenna. The modeling results for a microstrip antenna with a conical horn offer a working bandwidth of 930 MHz, spanning frequencies 7.44 GHz to 8.37 GHz. The axial ratio measurements for a microstrip antenna joined with a conical horn produce a working bandwidth of 150 MHz, covering frequencies ranging from 7.72 GHz to 7.87 GHz. The conical horn is attached to a microstrip antenna and has a gain of 15.1 dB. The proposed antenna is designed to meet ground station antenna requirements by pairing it with a parabolic reflector with a diameter of 3.7 meters. The primary focus antenna of the proposed design was chosen. The feed antenna and parabolic reflector should be positioned at a focus point distance of 1110 mm for a total gain of 38.9 dB at 7.8 GHz frequency. The proposed antenna can be applied on X-band remote sensing ground stations as a receiving antenna.
Design 64 Element Microstrip Antenna Array for Capturing Data from Himawari-8 Satellite MUHAMMAD RIZA DARMAWAN; MARTIANA KHOLILA FADHIL; CATUR APRIONO
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 13, No 3: Published July 2025
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v13i3.325

Abstract

This research develops a 64-element microstrip antenna array design using the Dolph-Chebyshev method for capturing Himawari-8 satellite data. Proximitycoupled feed is employed to enhance efficiency and minimize unwanted radiation. Dolph-Chebyshev amplitude distribution is implemented through Wilkinson unequal power dividers and λ/4 transformers for optimizing beamwidth and sidelobe levels. Simulation results show the antenna operates in the frequency range of 4.1036-4.459 GHz with a gain of 23.46 dB at 4.148 GHz. The directional radiation pattern has a 3 dB beamwidth of 6.5° in the E-Plane and 4.9° in the HPlane, with main lobe directions of 0° and 1° respectively. The total antenna dimensions of 752 mm × 627.94 mm × 3.255 mm without requiring a parabolic reflector make it more compact compared to previous designs.
Co-Authors Adhiyoga , Yohanes Galih Adhiyoga, Yohanes Galih Aditya Eka Mulyono Admaja , Awangga Febian Surya Adriansyah, Muhammad Athallah Aini Nurul Akbar, Anshari Akbar, Teuku Alif Rafi Amirsyah Rayhan Mubarak Amirul Ihsan Anita Rizkiyani ATHALLAH, MIKAIL FAUZAN Awangga Febian Surya Admaja A’isya Nur Aulia Yusuf B. Pratiknyo Adi Mahatmanto Bambang Dewandaru Dedi Irawadi Dian Widi Astuti Dinari Nikken Sulastrie Sirin Dinari Nikken Sulastrie Sirin Dzakwan Widyo Pangestu Eko Tjipto Rahardjo EkoTjipto Rahardjo, EkoTjipto Ellin Devihana Pratiwi Ellin Devihana Pratiwi Ellin Devihana Pratiwi Farhan Annur Mahmudi Fauzan, Itsnanta Muhammad Fitri Yuli Zulkifli Gede Deny Marthafani Gede Hendrik Amrico Hendrik Amrico Hendry Steven Marbun Herma Adis Herry Tony Andhyka Hidayat Gunawan Ibrahim Amyas Aksar Tarigan Ihsan, Amirul Insani Sekar Wangi Itsnanta Muhammad Fauzan Khalfan Nadhief Prayoga Wicaksono Khalfan Nadhief Prayoga Wicaksono KURNIAWAN, FAROHAJI LUBIS, MUHAMMAD FIRDAUS SYAWALUDIN Mahmudi, Farhan Annur Manzila Izniardi Djomiy Martiana Kholila Fadhil May Hendra Panjaitan Mubarak, Amirsyah Rayhan Muh Asnoer Laagu Muhammad Afiff Rizki Muhammad Afiff Rizki Muhammad Riza Darmawan Muhammad Riza Darmawan Muslim , Muslim Muslim Muslim Nabila Syadzwina Effendi Norihisa Hiromoto, Norihisa Nugroho Widi Jatmiko NUGROHO, SALSABILA SHITA PUTRI Nurul Aini Priska Apnitami Rahman, Liani Budi Resti Savira Resti Savira Roki Fernando RUHIYAT, ABDURRASYID Rusdiyanto, Dian Sahid Ridho Savitri Amalia Sifa Novwidia Agni Suhermanto Suhermanto Supriyono Supriyono Syaniri Andra Teuku Alif Rafi Akbar Trivia Anggita Wahdiyat, Aditya Inzani Wicaksono, Khalfan Nadhief Prayoga Yundari, Yundari Yus Natali Yustin, Alfiyah Shaldzabila